Classic Outlook
Microsoft fixes Classic Outlook bug causing email delivery issues
Microsoft has resolved a known issue that was preventing some Classic Outlook users from sending emails via Outlook.com. As the company explained when it acknowledged the issue last week, affected users were being warned that some of their messages hadn’t reached intended recipients. Microsoft said that those experiencing this issue would encounter it more often when […]
Microsoft links Classic Outlook issue to email delivery problems
Microsoft is investigating a known issue that prevents some Classic Outlook users from sending emails via Outlook.com. Affected users are being warned that their message hasn’t reached some intended recipients, and they will encounter this problem more often when the Outlook.com account they use to send email is an Outlook profile linked to another Exchange […]
Microsoft fixes Outlook Classic crashes caused by Teams Meeting add-in
Microsoft has resolved a known issue that rendered the classic Outlook email client unusable for users who enabled the Microsoft Teams Meeting Add-in. The bug was first reported on March 12, when affected Microsoft 365 customers began experiencing Outlook crashes and prompts to start it in safe mode. Microsoft acknowledged the issue nearly a week later in […]
Microsoft fixes bug causing Classic Outlook sync issues with Gmail
Microsoft has fixed a known issue causing Gmail and Yahoo email synchronization problems for classic Outlook users. As the company explained earlier this month, the bug triggers 0x800CCC0F and 0x80070057 error codes when synchronizing Gmail and Yahoo accounts. Microsoft said that this type of email account stopped syncing as of February 26, 2026, and that, in […]
Microsoft: Enabling Teams Meeting add-in breaks Outlook Classic
Microsoft is working to address a known issue that renders the classic Outlook email client unusable for users who have enabled the Microsoft Teams Meeting Add-in. “Some users may be unable to use Microsoft Outlook Classic while the Microsoft Teams Meeting Add-in is enabled,” Microsoft said in an admin center update under EX1254044. While it […]
Microsoft investigates classic Outlook sync and connection issues
Microsoft is investigating several issues causing email synchronization and connection problems when using the classic Outlook desktop client. The first bug causes “Can’t connect to the server” errors when creating groups in classic Outlook when Exchange Web Services (EWS) is enabled for the tenant. According to Microsoft, this occurs because the AD Graph call for […]
Microsoft says bug in classic Outlook hides the mouse pointer
Microsoft is investigating a known issue that causes the mouse pointer to disappear in the classic Outlook desktop email client for some users. This bug has been acknowledged almost two months after the first reports started surfacing online, with users saying that Outlook became unusable after the mouse pointer vanished while using the app. “My […]
Microsoft fixes Outlook bug blocking access to encrypted emails
Microsoft has fixed a known issue that prevented Microsoft 365 customers from opening encrypted emails in classic Outlook after a December update. This bug affects users who try to open messages encrypted with “Encrypt Only” permissions, a policy that doesn’t restrict forwarding, printing, or copying the email. On impacted systems, users are seeing a message_v2.rpmsg attachment […]
Microsoft shares workaround for Outlook freezes after Windows update
Microsoft shared a temporary workaround for customers experiencing Outlook freezes after installing this month’s Windows security updates. As explained one week ago, when Microsoft acknowledged the issue, the bug causes the classic Outlook desktop client to hang for users with POP email accounts who have deployed the KB5074109 security update on Windows 11 25H2 and 24H2 systems. Other […]
Microsoft: Windows 11 update causes Outlook freezes for POP users
Microsoft is investigating widespread reports that a January Windows 11 security update is causing the classic Outlook desktop client to freeze and hang for users with POP email accounts. POP (Post Office Protocol) is an email retrieval protocol used for downloading emails from a server to a local device. While POP isn’t as widely used […]